Saw filer and gummer



SAW FILER AND GUMMER.

APPLICATION FILED JUNE 29, I917.

. 1 $29,423. Patented Feb. 3, 1920.

\ IN VEN TOR.

UNITED STATEg THOIJTAS W. MoE/IICKEN, O1 HUMBLE, TEXAS.

sew rrrnn Ann coin/inn.

1,32%,423. Specification of Application filed June 29,

To all who 12bit may concern:

Be it known that T, Tiroiuiis W. Mc- MIoKnN, a citizen of the United States, residing at Humble, in the county of Harris and State of Texas, have invented certain new and useful Improvements in Saw Filers and Guinmers, of which the following is a specification.

This invention relates to new and useful improvements in a saw filer and gummer.

The object of the invention is to provide a device of the character described adapted for the purpose of sharpening and gumming the teeth of circular saws particularly such saws as are used in cotton gins.

The improvement herein described relates to an attachment to a saw filer and glimmer, a patent on which was heretofore issued to me by the United States Patent Office on the 18th day of April, 1916, No. 1,180,270, said attachment consisting of a guide which embraces the rim of the saw while being oper ated upon and pre "ents the vibration of said saw while the files are operating thereon. I

In using the saw filer and gummer above referred to, I have found that circular gin saws when being filed and guuuned, have a tendency to vibrate or move back and forth on account of the pressure of the files against the same, thus preventing the true operation of the files in filing and guinniing the teeth and I have added the attachment herein described and claimed, to embrace the rim of the saw so as to. hold it firmly against said file, thus conducing to the true operation of the file.

With the above and other objects in view, the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein Figure 1 shows a side elevation of the device showing certain parts broken away for the sake of clearness.

2 is an enlarged fragmentary side elevation, and

Fig. 3 is a fragmentary plan view of the gummer and saw guide.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 refers to a supporting base upstanding from which is the brace 2 th "eon.

Letters Patent.

Patented Feb. 3, 1920.

1917. terial No 177,7*?4.

and mounted upon which are the bearings 23, 3, in which the file rods 4, 4i, reciprocate. The forward ends of these rods carry the respective files 5, 5, which are reciprocated through a mechanism fully described in the patent hereinbefore referred to and which are provided forthe purpose of operating upon and filing the saw teeth. The nuinera 6 designates a guinmer which is disklike in form having a flat under surface and a beveled upper surface, said under and upper surface being roughened or serrated as shown in Figs. 2 and S. This gummer has a central orifice which receives the upper endof the shaft 7, upon which the gummer rotates. A beveled pinion 8 is provided, having a central orifice which also receives the upper end of the shaft 7 and this pinion is connected to and rotates with the guminer 6 and the gummer and pinion 8 are secured against detachment from the shaft 7 byincans of a lock nut 9 which is screwed onto the upper end of the shaft 7 and the pinion 8 is in mesh with and receives rotation from a pinion 10 which is fixed on the front end of the shaft 11. The shaft 11 extends through and has a bearing in the slidable block 12, said block also supporting the glimmer and being provided with a vertical bearing 13 which receives the shaft 7. The block 12 is reciprocated as fully described in. said patent above referred to so as to bring the gummer into and out of Contact with the saw teeth.

The forward end of the bearing 13 is rounded off and a guide 1 1 is provided, having an arcuate base which fits the contour of the rounded end of the bearing 13, said guide being secured to the hearing by means of set 'screv s which pass through the base and are screwed into the bearing; said guide is bifurcated, forming two fingers which closely embrace the saw underneath the gu. 'ier and hold said saw steady and prevent it from vibrating while the files and particularly the gunnner are operating rentit, the saw will vibrate, causing an 11 egular operation of the files and glimmer thereon and preventing thetrue filing and gumming of the teeth. These fingers are of such length that they will not be entirely withdrawn from the saw upon withdrawal of the gummer from operative contact with the teeth, but will at all times hold the gum- This guide is very essential. as

mer and saw in perfect alinement. The

guide is secured to the bearings 13 by means of set screws 15 so that when the fingers become worn allowing the saw too much play, the guide may be easily detached and a new one substituted therefor.

What I claim is: A. device of the character described including a rotatable disk-like saw gummer, a

supporting bearing therefor for holding the gummer against the saw, and whose outer end is rounded off, a detachable guide carried by said bearing formed with an arcuate base which fits against said rounded end and is detachably secured thereto, said guide haying spaced fingers which are adapted to rest against the saw on opposite sides of the teeth being operated on to prevent the Vibra tion of the saw while being operated on by said gummer and a mechanism for automatically withdrawing said gummer from the saw said fingers being of a sufficient length to embrace said saw when the gummer is withdrawn therefrom.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THGMAS W. MGMIGKEN.

Witnesses:

E. V. HARDWAY; FLORENCE JOHNSTON. 

